[IPython-dev] Windows crash - pyreadline? [was Re: IPython Crash Report]

[Jörgen Stenarson]

Fernando Perez skrev 2010-04-15 19:54:
> Howdy,
>
> below is a crash report from a windows user (full report attached).  I
> tested with 0.10 on linux and can't reproduce the problem, what I get
> is:
>
> In [1]: 'esth'.startswith(None)
> ---------------------------------------------------------------------------
> TypeError                                 Traceback (most recent call last)
>
> /home/fperez/tmp/junk/<ipython console>  in<module>()
>
> TypeError: expected a character buffer object
>
>
> and the session continues OK, but I don't have a windows box right now
> that I can test on.
>
> Can anyone see it on windows?
> Jorgen, do you think this could be a pyreadline problem?
>
I can not reproduce this problem but I'm on XP on 32 bit machine.
However I see the c:\python26\script directory in the traceback and this 
made me think that it could be a setuptools problem. I have seen strange 
things if you launch ipython using the exe file that setuptools 
generates. Can you confirm wether you are using that exe file? If you 
are can you try launching ipython without it.

/Jörgen


> Thanks for any feedback,
>
> f
>
> On Tue, Apr 13, 2010 at 4:30 PM, Tom Plunket<tom at readyatdawn.com>  wrote:
>> IPython rocks, thanks for developing it.  Sorry for any stupid formatting
>> this email may bring; work requirements y'know?
>>
>> Anyway- I've never seen an IPython crash before so this was surprising to
>> say the least.  I looked at the crash report and it appeared to have no
>> history.  I was curious what some_string.startswith(None) would do.
>>
>> The beginning of my IPython session looks like this.  The last lines here
>> are in the crash report preceding a bunch of blank-but-numbered lines.  On
>> Windows Vista x64 with pyreadline installed.
>>
>> Python 2.6.4 (r264:75706, Jan 22 2010, 17:24:21) [MSC v.1500 64 bit (AMD64)]
>> Type "copyright", "credits" or "license" for more information.
>>
>> IPython 0.10 -- An enhanced Interactive Python.
>> ?         ->  Introduction and overview of IPython's features.
>> %quickref ->  Quick reference.
>> help      ->  Python's own help system.
>> object?   ->  Details about 'object'. ?object also works, ?? prints more.
>>
>> In [1]: 'esth'.startswith(None)
>> ---------------------------------------------------------------------------
>> WindowsError                           Python 2.6.4: c:\python26\python.exe
>>                                                     Tue Apr 13 16:20:03 2010
>> A problem occured executing Python code.  Here is the sequence of function
>> calls leading up to the error, with the most recent (innermost) call last.
>>
>> C:\Python26\Scripts\_ctypes\callbacks.c in 'calling callback function'()
>>      280
>>      281
>>
>>
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